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Highly Selective Oxidation of Organosilanes to Silanols with Hydrogen Peroxide Catalyzed by a Lacunary Polyoxotungstate by Ryo Ishimoto; Keigo Kamata ; Noritaka Mizuno is a Chemistry article available to read on EtoBox.
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Organosilicon compounds have attracted much attention, and silanols are widely utilized as building blocks for the production of silicon-based polymer materials and organic donors in metal-catalyzed cross-coupling reactions. [1, 2] Silanols are conventionally synthesized by hydrolysis of chlorosilanes [3] and treatment of siloxanes with alkaline reagents. [4] Strictly controlled reaction conditions are needed and it is difficult to synthesize sterically exposed silanols that readily condense to form disiloxanes. Oxidation with stoichiometric oxidants such as silver salts, [5] peracids, [6] permanganate, [7] dioxiranes, [8] osmium tetroxide, [9] oxaziridines, [10] and ozone [11] has also been reported. However, most of them lead to undesired production of the corresponding siloxanes instead of silanols. In contrast to these approaches, transitionmetal-catalyzed oxidation of silanes to silanols is a promising synthetic method. Hydrolytic oxidation systems based on Ir, [12] Ru, [13] Ag, [14] Cu, [15] Cr, [16] Re, [17] Pt, [18] and Au [19] catalysts with water as oxygen donor have been reported, and some of them show broad substrate scope and high catalytic activity. Another approach i
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- Author
- Ryo Ishimoto; Keigo Kamata ; Noritaka Mizuno
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley; Research Square (ISSN 0044-8249)
- Published
- 2009
- Language
- EN
- Field
- Chemistry (Physical Sciences)